Use and Care Manual

Page 35 mrcool.com
Maintenance
Error Code
WARNING
1) When abnormalities occur, stop the unit immediately and disconnect power. Contact
MRCOOL. If the unit continues to run abnormally, it may damage the unit and cause an
electric shock or a fire hazard.
2) DO NOT attempt repairs to the appliance yourself. Improper repair and maintenance
can create electric shock and fire hazards. Please contact MRCOOL®Tech Support for
further guidance or a qualified professional for repairs.
Number Error Code Error
1 E1 Compressor high pressure protection
2 E4 Compressor air discharge high-temperature protection
4 F2 Condenser temperature sensor error
5 F3 Outdoor ambient temperature sensor error
6 F4 Discharge temperature sensor error
7 F6 Outdoor unit tube temperature sensor error
8 EE Outdoor unit memory chip error
9 PF Electric box sensor error
10 H3 Compressor overload protection
11 H4 Overload
12 H5 IPM protection
13 H6 DC fan error
14 H7 Driver out-of-step protection
15 HC Pfc protection
16 Lc Startup failure
17 Ld Compressor phase-sequence protection
18 LF Power protection
19 U7 4-way valve switch-over error
20 P0 Drive reset protection
3 E3
Compressor low pressure protection, refrigerant lack protection and refrigerant
collecting mode
If the display panel or wired control displays an error code, please refer to the following table:
25